Changing mile : an ecological study of vegetation change with time in the Lower Mile of an arid and semiarid región / by Hastings, Janes Rodney

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Intruduzione allo studio della fitosociología / by Tomaselli, Ruggero

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Morphology of angiosperms / by Coulter, John Merle

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Potere di movimento nelle piante / by Darwin, Charles

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Ricordi entomologici : studi sull'istinto e i costumi degli insetti / by Fabre, Henri J.

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Nuove revelazioni della psiche animale : da esperimenti dell'autore / by Mackenzie, William

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Observations sur la phychologie animale : dans les parcs nationaux de Congo Belge / by Hediger, H.

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Merveilles de la nature : les insectes / by Künckel D'Herculais, J.

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Raza americana / by Brinton, Daniel G.

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Introduction to plant ecology / by Tansley, Arthur George

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Outline of plant geography / by Campbell, Douglas Houghton

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Historia de la creación de los seres organizados según las leyes naturales / by Haeckel, Ernest

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Microorganismes de nos eaux douces / by Wyngaert, Charles de

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Data analysis and data synthesis of forest ecosystems / by Meyer, B.

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Tipos humanos / by Schreider, Eugenio

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Formes de jeunesse des abietacees : ontogenie-phylogenie / by Ferré, Y. de

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Traité général de botanique descriptive et analytique / by Le Maout, Emm

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Natural selection in human populations / by Roberts, D. F.

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Morfología submicroscópica del protoplasma / by Frey Wissling, A.

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Stages in the evolution of plant species / by Clausen, Jens

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